Concrete-mixing machine.



PATENTED APR. 22. 1908.

RJ. SBILNTINE. CONQRETB MIXING MAGHINEx APPLYIGATIQN TILD JULY 17. 19017:.

2 SHEETS-*SHEET 1.

8 O 9 l 8 2 R P A D E Ami N E T A D..

DL N Tl ml. N E L, .L E S TU Dn CONCRETE MIXING MACHINE.

APPLICATION 'ILED JULY 17A 19071 2 SHEETS-SHEET 2v narran sirenas earner entre ROBERT J. SELLENTINE, OF CLEVELAND, OHIO.

CONCRETE-lamine riesame.

no. seams.

To all'wtom it mayy concern:

Be 1t known that I, ROBERT fl; SerennrrNn, a citizen @f theUnitedA States, and a resident of Cleveland, in the county of Cuya- `hoga and State of Ohio, have invented cer tam nevv' .and useful/Improvements in Concrete-Mixing Machines, of which the followmg 1s a specification` i AMy invention relates to improvements in concrete mixing machines and the objects of my miprovementare: first to vprovide a mixmg drum Whichatords the largest capacity and efficiency-"in a given" space,` second to provide a sim le and practical rotating mechanism ior saiy dru'm, third to arrange o posing angular projections f'vlthin said rum which cause a speedy and vl,thorough mixing oiA the material With W ich the drum is charged, and fourth to render the'tiltinff of said drum most convenient in any desirable inclination and'to enable a ready return of said drum into its proper working .condition and position. l attain these objects in a contrivance constructed substantially as illustrated in the accompanying drawings in which Figure l is a face view of the feeding side or' said machine. Fig. 2 is a plan view of said machine.' Fig.` -3 represents an end view as seen from the right of Fig. l the driving shaft being shown in section. Fig. 4 rep resents an interior view of the drum, and Fig. 5 is a vertical transverse sectional view on linea; :c see Fig. 2.

This mixing machine as a Whole is mounted on a'truck A so as to be easily portable and ready for usein any place or locality, Where the service of such may be needed.

, At one end oi the truck irameA is mounted a suitable power element, steam, electric or explosion motor (not shown). Such motor -is gpnerally arranged in clutch connection wit the driving shaft S, which imparts motion to the drum by a set of spur gearing or the like. v

The drum B issu ported andgnlded Within and upon a circu ar open frame C; diametvically opposite, projecting from which arey the trunnrons a, a the latter being journaled" in thestandards D D, while the-standards are secured tothe truck frame A.. This circular frame C consists of the' rings i) b which are` helddistant from each other' and secureiy united by lateral braces c c and c c the latter 'two braces carrying the trunnions a a", which may form an integral part oi the rings, cr they may be fastened thereto. *interposed specifica-tion or Letters Patent. Application sies :my n, 19m. serai no. 384,277.

Patented April 28, 1908.

between the drum B and the saidrings 9b t are a series oi flan ed rolls orvi'fheels EE which revolve on ar l ors d of the brackets c, the latter being securely fastened to the shell or cylindrical part ofthe drum sulv stantially as shown in igs. l'and 5. i mhe beveled gear ring F is. alsosecured to or\carri'ed by said brackets c in concentric relation with and to the drum B, a inion G engages said gear ring, the shaft' the drum.

As shown the trunnion a' is provided with a self locking tilting lever l, the spring actuated pawl g` of which engages the serrated segment J'Which is a statlonary part of the standard `D. Simpl upon compressing the latch H the pawl Willdisengage from the ser rated segment and the drum may belowered more or less, stop h being providedto limit the tilting of the drum from a horizontal position to the lowest desirable inclined one.A

Figs. 1 and 5 illustrate the drum in horizontal position,` While in'Fig. 3 the drum is shown partially inclined, however the drum may be tilted still further until the lever I strikes the stop it.

InA the main the drum is.. of cylindrical shape from the front head to the junction of the cone part lc; material is entered through the opening j in the head, and dischar ed by Way of the opening k which is formed by the A chute L is arranged in ing around the lowerA edge of said opening said chute projects partly into the drum to facilitate thercharging and entering oi the material. As shown a bracket Z is secured to the tilting frame() which bracket su ports the chute substantially as shown. linside the drum are provided a series of angular of said pin ion is journaled in the trnnnion a; and out` -side or the trunnion the shaft is irnconnection with the motor b anyv suitable gearing.l director indirect for t e purpose oi rotating.

projections or strips m which are oppcsitely arranged in pairs substantially asehown in 5. By said stri s the concrete material is kept continual y in commotion and [carried a certain distance upward within said drum thence it' is thrown u on the succeeding pair of strips to lbe mixe with freshlyl incoming materiai until the drum becomes .charged withl a certanrquantity that can advantavecnsly be. manipulated at a time. Each` i etch is` agitated fior a certain length of time thence it is discharged upon tilting the los.

w @EN "wir D wlmi claim :Jul desire. m sa@ by Letin a coni-few mixing lmzcchine, the @clubimtmi uf @L f :mw having fwo drum suppe-YV {viti} a mixing drum, L bev- :mi and mm'ui'iu Wh Said eff-6,0m

drm'., a p''uralty of blrackefs which secure' the gem" 'the drum; Shafts rotatably mounted ,in said brackets parallel with the, axis of the d um, und nuged whees secured tn the ends of said shafts; and engaging tim inner pvrphexies of said rin` 's rvspecvely. 

